Ummm, no, not really. The only thing you can't see is his face, it just gets insanely dark under the hood. In Kingdom Hearts 2 there are several Unknowns but you don't know who they are. In the trailer for Kingdom Hearts 2, it shows an unhooded Unknown but nobody knows who he is yet.
You can kind of see their faces in this awesome teaser trailer, but I thought it would be easier to model without any face and just leave it black.
Go to this website to see the teaser trailer http://www.geocities.com/jevonq/
It's the thumbnail on the right, 6th one down called Deep Dive. Enjoy it, it's an awesome video. By watching it you will know why I want the Unknown to be modeled along with the KeyBlades